CMYK or RGB Swatches that are saved from Photoshop can be read and used by Power Stroke. All you need to do is place Photoshop Swatches .aco file into the Power Stroke palettes folder and they will show up in the Power Stroke Palette menu.

Note: For Photoshop CS?on Macintosh systems, you will have to first navigate to the Macintosh HD/Applications/Adobe Photoshop CS?/Plug-ins/DFT Power Stroke v1 folder. Once there, Ctrl-left click on the PowerStroke.plugin file and choose Show Package Contents. You can then navigate to the profiles folder located at: Contents/Resources/data/palettes.